2C: Cell Size and Shape
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6 Terms
ovum (pl. ova)
a fully mature female egg cell which, when fertilised, can divide and give rise to an embryo
red blood cells
cells that transport oxygen through the bloodstream and do not contain a nucleus
volume
the amount of space inside an object. Measured in (units of length)3 (i.e. mm3 , cm3 , m3 )
surface area
a the sum of the area of all exposed sides of a three-dimensional shape. Measured in (units of length)2 (i.e. mm2 , cm2 , m2 )
ratio
a comparison between two things to show proportions
surface area : volume ratio (SA:V)
a comparison of the amount of surface area per unit of volume. In Biology, SA:V influences temperature regulation, and a high SA:V leads to more effective transport into and out of cells
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